<html>

<head>
    <meta>
    <title>最早的网页</title>
</head>

<body>
    <p id="p">你的名字：</p>
    <input id="user">
    <button onclick="show()">显示名称</button>
</body>

<script>
    let y = 123;
    let z = 456;
</script>

</html>